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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qsgopenvgglyphnode_p.h"
#include "qopenvgcontext_p.h"
#include "qsgopenvgcontext_p.h"
#include "qsgopenvghelpers.h"
#include "qsgopenvgfontglyphcache.h"
#include "qopenvgoffscreensurface.h"
#include <cmath>
QT_BEGIN_NAMESPACE
QSGOpenVGGlyphNode::QSGOpenVGGlyphNode(QSGRenderContext *rc)
: m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 0)
, m_style(QQuickText::Normal)
, m_glyphCache(nullptr)
{
// Set Dummy material to avoid asserts
setMaterial((QSGMaterial*)1);
setGeometry(&m_geometry);
m_fontColorPaint = vgCreatePaint();
m_styleColorPaint = vgCreatePaint();
// Get handle to Glyph Cache
m_renderContext = static_cast<QSGOpenVGRenderContext*>(rc);
}
QSGOpenVGGlyphNode::~QSGOpenVGGlyphNode()
{
if (m_glyphCache)
m_glyphCache->release(m_glyphRun.glyphIndexes());
vgDestroyPaint(m_fontColorPaint);
vgDestroyPaint(m_styleColorPaint);
}
void QSGOpenVGGlyphNode::setGlyphs(const QPointF &position, const QGlyphRun &glyphs)
{
// Obtain glyph cache for font
auto oldGlyphCache = m_glyphCache;
m_glyphCache = m_renderContext->glyphCache(glyphs.rawFont());
if (m_glyphCache != oldGlyphCache) {
if (oldGlyphCache)
oldGlyphCache->release(m_glyphRun.glyphIndexes());
}
m_glyphCache->populate(glyphs.glyphIndexes());
m_position = position;
m_glyphRun = glyphs;
m_bounding_rect = glyphs.boundingRect().translated(m_position - QPointF(0.0, glyphs.rawFont().ascent()));
// Recreate ajustments
m_xAdjustments.clear();
m_yAdjustments.clear();
for (int i = 1; i < glyphs.positions().count(); ++i) {
m_xAdjustments.append(glyphs.positions().at(i).x() - glyphs.positions().at(i-1).x());
m_yAdjustments.append(glyphs.positions().at(i).y() - glyphs.positions().at(i-1).y());
}
}
void QSGOpenVGGlyphNode::setColor(const QColor &color)
{
m_color = color;
vgSetParameteri(m_fontColorPaint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
vgSetParameterfv(m_fontColorPaint, VG_PAINT_COLOR, 4, QSGOpenVGHelpers::qColorToVGColor(m_color, opacity()).constData());
}
void QSGOpenVGGlyphNode::setStyle(QQuickText::TextStyle style)
{
m_style = style;
}
void QSGOpenVGGlyphNode::setStyleColor(const QColor &color)
{
m_styleColor = color;
vgSetParameteri(m_styleColorPaint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
vgSetParameterfv(m_styleColorPaint, VG_PAINT_COLOR, 4, QSGOpenVGHelpers::qColorToVGColor(m_styleColor, opacity()).constData());
}
QPointF QSGOpenVGGlyphNode::baseLine() const
{
return QPointF();
}
void QSGOpenVGGlyphNode::setPreferredAntialiasingMode(QSGGlyphNode::AntialiasingMode)
{
}
void QSGOpenVGGlyphNode::update()
{
}
void QSGOpenVGGlyphNode::render()
{
if (m_glyphRun.positions().count() == 0)
return;
// Rendering Style
qreal offset = 1.0;
QOpenVGOffscreenSurface *offscreenSurface = nullptr;
// Set Transform
vgSeti(VG_MATRIX_MODE, VG_MATRIX_GLYPH_USER_TO_SURFACE);
if (transform().isAffine()) {
vgLoadMatrix(transform().constData());
} else {
vgLoadIdentity();
offscreenSurface = new QOpenVGOffscreenSurface(QSize(std::ceil(m_bounding_rect.width()), std::ceil(m_bounding_rect.height())));
offscreenSurface->makeCurrent();
}
// Set Quality
vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_BETTER);
switch (m_style) {
case QQuickText::Normal: break;
case QQuickText::Outline:
// Set the correct fill state
vgSetPaint(m_styleColorPaint, VG_FILL_PATH);
drawGlyphsAtOffset(QPointF(0, offset));
drawGlyphsAtOffset(QPointF(0, -offset));
drawGlyphsAtOffset(QPointF(offset, 0));
drawGlyphsAtOffset(QPointF(-offset, 0));
break;
case QQuickText::Raised:
vgSetPaint(m_styleColorPaint, VG_FILL_PATH);
drawGlyphsAtOffset(QPointF(0, offset));
break;
case QQuickText::Sunken:
vgSetPaint(m_styleColorPaint, VG_FILL_PATH);
drawGlyphsAtOffset(QPointF(0, -offset));
break;
}
// Set the correct fill state
vgSetPaint(m_fontColorPaint, VG_FILL_PATH);
drawGlyphsAtOffset(QPointF(0.0, 0.0));
if (!transform().isAffine()) {
vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
vgLoadMatrix(transform().constData());
offscreenSurface->doneCurrent();
vgDrawImage(offscreenSurface->image());
delete offscreenSurface;
}
}
void QSGOpenVGGlyphNode::setOpacity(float opacity)
{
if (QSGOpenVGRenderable::opacity() != opacity) {
QSGOpenVGRenderable::setOpacity(opacity);
// Update Colors
setColor(m_color);
setStyleColor(m_styleColor);
}
}
void QSGOpenVGGlyphNode::drawGlyphsAtOffset(const QPointF &offset)
{
QPointF firstPosition = m_glyphRun.positions()[0] + (m_position - QPointF(0, m_glyphRun.rawFont().ascent()));
VGfloat origin[2];
origin[0] = firstPosition.x() + offset.x();
origin[1] = firstPosition.y() + offset.y();
vgSetfv(VG_GLYPH_ORIGIN, 2, origin);
vgDrawGlyphs(m_glyphCache->font(),
m_glyphRun.glyphIndexes().count(),
(VGuint*)m_glyphRun.glyphIndexes().constData(),
m_xAdjustments.constData(),
m_yAdjustments.constData(),
VG_FILL_PATH,
VG_TRUE);
}
QT_END_NAMESPACE
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